ACKONYCTA. 137 



middle and forking at extremity ; antemedial line represented 

 by a black mark on costa and two slight marks on inner margin ; 

 orbicular and reniform very small and slightly defined by black, the 

 former elongate, the latter narrow ; a medial black spot on costa 

 and slight mark on inner margin ; postmedial line with small black 

 spot on costa, strongly bent outwards and almost obsolete below 

 costa, then represented by small black lunules, produced to slight 

 streaks above vein 7 and at discal fold, incurved below vein 3, 

 angled inwards in submedian fold and crossed by a black streak 

 from well before it to near termen and angled outwards on vein 1 ; 

 a series of small black spots on termen and base of cilia. Hind 

 wing pure white irrorated with a few black scales on terminal 

 area ; a postmedial series of minute black points on the veins ; a 

 slight black striga on termen at submedian interspace ; the under- 

 side with black S])ot on upper discocellular, and indistinct curved 

 minutely waved postmedial line. 



Hub. Canada, Manitoba. Aweme (C7^iddle), 1 J ; U.S.A., J^ew 

 Hampshire, Manchester, New York, Long I., Florida, S. Dakota, 

 Volga, Iowa, Decorah, 1 J , Kansas, Montana, Colorado. E.vj). 

 48 millim. 



3724. Acronycta populi. (Plate CXXVI. fig. 14.) 



Acronycta populi, Riley, 2nd Kept. Ins. Mo p. 119, ff. 87, 88 (1870) ; 

 Smith & Dyar. Pr. U.S. Nat. Mus. xxi. p. 61, pi. xi. t. 7 ; Smith, Cat. 

 Noct. N. Am. p. 40. 



Head and thorax white mixed with pale brown ; palpi at base 

 and sides of Irons blackish ; antennae blackish ; shoulders with 

 black streaks ; tarsi ringed black and white ; abdomen white 

 dorsally irrorated with fuscous. Fore wing white, irrorated with 

 fuscous ; subbasal line represented by an oblique black striga from 

 costa ; a slight sinuous black streak below basal half of cell with 

 some dark suffusion below it at base ; antemedial line represented 

 by a diffused oblique black bar from costa and a dark mark on 

 middle of inner margin ; orbicular slightly and incompletely defined 

 by black, rather elongate elliptical : reniform an obscure blackish 

 lunule with irregular black bar above it from costa; postmedial. 

 line with black point at costa, then very indistinct, strongly bent 

 outwards below costa, slightly angled inwards and with small 

 black spot on it at discal fold and black point below vein 5, 

 strongly incurved and minutely dentate below vein 4, with slight 

 dark lunule below vein 3 and stronger lunule below 2 with short 

 streak beyond it, angled outwards at vein 1 ; subterminal line 

 absent ; cilia intersected by black streaks in the interspaces. Hind 

 wing white, the veins and terminal area very slightly irrorated with 

 brown ; a terminal series of black points with faint streaks from 

 them intersecting the cilia ; the underside with the costal and 

 terminal areas slightly irrorated with brown, a black discoidal spot 

 and traces of sinuous postmedial line. 



Hah. Canada, Oiitario, London ; U.S.A., Massachusetts, New 



